@misc{indiciaec2f3b0783ec4,
  title = {The CAL four channel solid state echo-encephaloscope.},
  author = {D E Robinson and J Jellins and G Kossoff},
  year = {1970},
  doi = {10.1016/0041-624x(70)90047-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/5440775/},
  note = {Source identifier: 5440775}
}